Change headers labels in Pivot table

Hello everyone,
anyone knows if there is a way to chenge the headers labels in pivot table as MS Excel allows to do?
I’m trying to create a pivot table for direct print calculations and results, but it’s quite annoying having the data grouped in fields as, for example, sum - incomes or mean - incomes…i would like to change them for a better readability by other persons. In some cases I have complex column headers names that i want to shorten or simplify when displayed on pivot tables.
Is there a way i can do it?

I’m using LibreOffice on a Windows 10 Pro platform.
Thanks in advance for helping.

Luca Biraghi